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HTML Code View

Postbox HTML Code ViewPostbox sports a rich code editor within the Compose window, powered by CodeMirror.

Within the Compose window, click the code button </> to switch into Code View.

Here you can take advantage of its many features, including these:

Customizable Themes for Code View

To change your default Code View theme, go to Postbox (OS X)/Tools (Windows) > Preferences/Options > Composition > Advanced.

To change the Code View theme just for the current message, go to View > Theme.

Auto-Completion of HTML Tags

Hold down your control/alt-space key as you type to auto-complete HTML tags based on a built-in library of them.